Fun to Ride : The Kids bikes are designed for maximum enjoyment. It features a durable and lightweight magnesium alloy frame. Safe & Durable : Sturdy Premium magnesium alloy frame and steel fork provide awesome impact resistance when riding over rocky and bumpy terrain Safety Riding : Rear disc brake and front caliper brake offer very safe riding, this kids bike will have more stopping power and the wheel is wrapped in Rubber off-road tires for outstanding grip and stability in any weather conditions. Grow with Kids : Equipped with detachable training wheels, a height-adjustable seat and a handlebar, this kids bicycle can meet the needs of your child at different stages and grow with them. East to Install : The children's bike is 95 % assembled and comes with the basic assembly tools, only a few parts need to be added to the bike